Home / 724,915.49-1,000,355.70-402,646.25

Finding the Fourth Proportional to 724,915.49, 1,000,355.70 and 402,646.25

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Solution

The fourth proportional to 724,915.49, 1,000,355.70 and 402,646.25 is: 555,636.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,915.49 : 1,000,355.70 = 402,646.25 : x
  2. Step 2: Convert to fraction form
    724,915.49/1,000,355.70 = 402,646.25/x
  3. Step 3: Cross multiply
    724,915.49x = 1,000,355.70 × 402,646.25
  4. Step 4: Simplify right side
    724,915.49x = 402,789,475,281.94
  5. Step 5: Solve for x
    x = 402,789,475,281.94/724,915.49
  6. Step 6: Final answer
    x = 555,636.46

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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.