Home / 724,957.40-1,000,413.60-402,688.28

Finding the Fourth Proportional to 724,957.40, 1,000,413.60 and 402,688.28

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Solution

The fourth proportional to 724,957.40, 1,000,413.60 and 402,688.28 is: 555,694.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,957.40 : 1,000,413.60 = 402,688.28 : x
  2. Step 2: Convert to fraction form
    724,957.40/1,000,413.60 = 402,688.28/x
  3. Step 3: Cross multiply
    724,957.40x = 1,000,413.60 × 402,688.28
  4. Step 4: Simplify right side
    724,957.40x = 402,854,831,872.61
  5. Step 5: Solve for x
    x = 402,854,831,872.61/724,957.40
  6. Step 6: Final answer
    x = 555,694.49

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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.