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Finding the Fourth Proportional to 707,823.70, 976,807.80 and 385,533.70

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Solution

The fourth proportional to 707,823.70, 976,807.80 and 385,533.70 is: 532,042.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,823.70 : 976,807.80 = 385,533.70 : x
  2. Step 2: Convert to fraction form
    707,823.70/976,807.80 = 385,533.70/x
  3. Step 3: Cross multiply
    707,823.70x = 976,807.80 × 385,533.70
  4. Step 4: Simplify right side
    707,823.70x = 376,592,325,322.86
  5. Step 5: Solve for x
    x = 376,592,325,322.86/707,823.70
  6. Step 6: Final answer
    x = 532,042.55

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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.