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Finding the Fourth Proportional to 690,321.72, 952,278.60 and 475,088.12

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Solution

The fourth proportional to 690,321.72, 952,278.60 and 475,088.12 is: 655,370.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,321.72 : 952,278.60 = 475,088.12 : x
  2. Step 2: Convert to fraction form
    690,321.72/952,278.60 = 475,088.12/x
  3. Step 3: Cross multiply
    690,321.72x = 952,278.60 × 475,088.12
  4. Step 4: Simplify right side
    690,321.72x = 452,416,249,790.23
  5. Step 5: Solve for x
    x = 452,416,249,790.23/690,321.72
  6. Step 6: Final answer
    x = 655,370.15

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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.