Home / 739,864,653.72-1,021,012,867.20-442,506,890.76

Finding the Fourth Proportional to 739,864,653.72, 1,021,012,867.20 and 442,506,890.76

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Solution

The fourth proportional to 739,864,653.72, 1,021,012,867.20 and 442,506,890.76 is: 610,659,296.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,864,653.72 : 1,021,012,867.20 = 442,506,890.76 : x
  2. Step 2: Convert to fraction form
    739,864,653.72/1,021,012,867.20 = 442,506,890.76/x
  3. Step 3: Cross multiply
    739,864,653.72x = 1,021,012,867.20 × 442,506,890.76
  4. Step 4: Simplify right side
    739,864,653.72x = 451,805,229,290,624,768
  5. Step 5: Solve for x
    x = 451,805,229,290,624,768/739,864,653.72
  6. Step 6: Final answer
    x = 610,659,296.97

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Double scale
Find fourth proportional to 739,864,654.72, 1,021,012,868.58 and 442,506,891.76
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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.