Home / 660,553,685.40-990,830,528.10-442,875,451.80

Finding the Fourth Proportional to 660,553,685.40, 990,830,528.10 and 442,875,451.80

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Solution

The fourth proportional to 660,553,685.40, 990,830,528.10 and 442,875,451.80 is: 664,313,177.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,553,685.40 : 990,830,528.10 = 442,875,451.80 : x
  2. Step 2: Convert to fraction form
    660,553,685.40/990,830,528.10 = 442,875,451.80/x
  3. Step 3: Cross multiply
    660,553,685.40x = 990,830,528.10 × 442,875,451.80
  4. Step 4: Simplify right side
    660,553,685.40x = 438,814,517,789,520,128
  5. Step 5: Solve for x
    x = 438,814,517,789,520,128/660,553,685.40
  6. Step 6: Final answer
    x = 664,313,177.70

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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.