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Finding the Fourth Proportional to 750,891.70, 1,035,400.36 and 478,528.39

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Solution

The fourth proportional to 750,891.70, 1,035,400.36 and 478,528.39 is: 659,840.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    750,891.70 : 1,035,400.36 = 478,528.39 : x
  2. Step 2: Convert to fraction form
    750,891.70/1,035,400.36 = 478,528.39/x
  3. Step 3: Cross multiply
    750,891.70x = 1,035,400.36 × 478,528.39
  4. Step 4: Simplify right side
    750,891.70x = 495,468,459,706.58
  5. Step 5: Solve for x
    x = 495,468,459,706.58/750,891.70
  6. Step 6: Final answer
    x = 659,840.11

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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.