Home / 676,923.60-1,015,385.40-645,819.60

Finding the Fourth Proportional to 676,923.60, 1,015,385.40 and 645,819.60

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Solution

The fourth proportional to 676,923.60, 1,015,385.40 and 645,819.60 is: 968,729.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,923.60 : 1,015,385.40 = 645,819.60 : x
  2. Step 2: Convert to fraction form
    676,923.60/1,015,385.40 = 645,819.60/x
  3. Step 3: Cross multiply
    676,923.60x = 1,015,385.40 × 645,819.60
  4. Step 4: Simplify right side
    676,923.60x = 655,755,792,873.84
  5. Step 5: Solve for x
    x = 655,755,792,873.84/676,923.60
  6. Step 6: Final answer
    x = 968,729.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.