Home / 678,154.95-935,792.01-402,465.24

Finding the Fourth Proportional to 678,154.95, 935,792.01 and 402,465.24

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Solution

The fourth proportional to 678,154.95, 935,792.01 and 402,465.24 is: 555,365.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,154.95 : 935,792.01 = 402,465.24 : x
  2. Step 2: Convert to fraction form
    678,154.95/935,792.01 = 402,465.24/x
  3. Step 3: Cross multiply
    678,154.95x = 935,792.01 × 402,465.24
  4. Step 4: Simplify right side
    678,154.95x = 376,623,755,894.73
  5. Step 5: Solve for x
    x = 376,623,755,894.73/678,154.95
  6. Step 6: Final answer
    x = 555,365.34

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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.