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Finding the Fourth Proportional to 690,967.52, 953,564.76 and 385,044.32

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Solution

The fourth proportional to 690,967.52, 953,564.76 and 385,044.32 is: 531,377.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,967.52 : 953,564.76 = 385,044.32 : x
  2. Step 2: Convert to fraction form
    690,967.52/953,564.76 = 385,044.32/x
  3. Step 3: Cross multiply
    690,967.52x = 953,564.76 × 385,044.32
  4. Step 4: Simplify right side
    690,967.52x = 367,164,694,590.16
  5. Step 5: Solve for x
    x = 367,164,694,590.16/690,967.52
  6. Step 6: Final answer
    x = 531,377.65

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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.