Home / 699,159,662,312.10-964,830,065,813.04-390,515,525,586.20

Finding the Fourth Proportional to 699,159,662,312.10, 964,830,065,813.04 and 390,515,525,586.20

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Solution

The fourth proportional to 699,159,662,312.10, 964,830,065,813.04 and 390,515,525,586.20 is: 538,905,690,019.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,159,662,312.10 : 964,830,065,813.04 = 390,515,525,586.20 : x
  2. Step 2: Convert to fraction form
    699,159,662,312.10/964,830,065,813.04 = 390,515,525,586.20/x
  3. Step 3: Cross multiply
    699,159,662,312.10x = 964,830,065,813.04 × 390,515,525,586.20
  4. Step 4: Simplify right side
    699,159,662,312.10x = 376,781,120,252,347,311,718,400
  5. Step 5: Solve for x
    x = 376,781,120,252,347,311,718,400/699,159,662,312.10
  6. Step 6: Final answer
    x = 538,905,690,019.85

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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.