Home / 724,838,480.80-1,087,635,634.80-315,935,965.60

Finding the Fourth Proportional to 724,838,480.80, 1,087,635,634.80 and 315,935,965.60

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Solution

The fourth proportional to 724,838,480.80, 1,087,635,634.80 and 315,935,965.60 is: 474,068,669.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,838,480.80 : 1,087,635,634.80 = 315,935,965.60 : x
  2. Step 2: Convert to fraction form
    724,838,480.80/1,087,635,634.80 = 315,935,965.60/x
  3. Step 3: Cross multiply
    724,838,480.80x = 1,087,635,634.80 × 315,935,965.60
  4. Step 4: Simplify right side
    724,838,480.80x = 343,623,214,501,506,944
  5. Step 5: Solve for x
    x = 343,623,214,501,506,944/724,838,480.80
  6. Step 6: Final answer
    x = 474,068,669.92

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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.