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Finding the Fourth Proportional to 710,349.60, 980,055 and 506,433.72

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Solution

The fourth proportional to 710,349.60, 980,055 and 506,433.72 is: 698,716.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,349.60 : 980,055 = 506,433.72 : x
  2. Step 2: Convert to fraction form
    710,349.60/980,055 = 506,433.72/x
  3. Step 3: Cross multiply
    710,349.60x = 980,055 × 506,433.72
  4. Step 4: Simplify right side
    710,349.60x = 496,332,899,454.60
  5. Step 5: Solve for x
    x = 496,332,899,454.60/710,349.60
  6. Step 6: Final answer
    x = 698,716.38

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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.