Home / 699,159,662,316.24-964,830,065,818.50-390,515,525,590.28

Finding the Fourth Proportional to 699,159,662,316.24, 964,830,065,818.50 and 390,515,525,590.28

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Solution

The fourth proportional to 699,159,662,316.24, 964,830,065,818.50 and 390,515,525,590.28 is: 538,905,690,025.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,159,662,316.24 : 964,830,065,818.50 = 390,515,525,590.28 : x
  2. Step 2: Convert to fraction form
    699,159,662,316.24/964,830,065,818.50 = 390,515,525,590.28/x
  3. Step 3: Cross multiply
    699,159,662,316.24x = 964,830,065,818.50 × 390,515,525,590.28
  4. Step 4: Simplify right side
    699,159,662,316.24x = 376,781,120,258,416,033,398,784
  5. Step 5: Solve for x
    x = 376,781,120,258,416,033,398,784/699,159,662,316.24
  6. Step 6: Final answer
    x = 538,905,690,025.34

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.