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Finding the Fourth Proportional to 710,939.40, 975,874.04 and 628,562.40

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Solution

The fourth proportional to 710,939.40, 975,874.04 and 628,562.40 is: 862,798.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,939.40 : 975,874.04 = 628,562.40 : x
  2. Step 2: Convert to fraction form
    710,939.40/975,874.04 = 628,562.40/x
  3. Step 3: Cross multiply
    710,939.40x = 975,874.04 × 628,562.40
  4. Step 4: Simplify right side
    710,939.40x = 613,397,728,680.10
  5. Step 5: Solve for x
    x = 613,397,728,680.10/710,939.40
  6. Step 6: Final answer
    x = 862,798.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.