Home / 825,702,947.90-1,238,554,421.85-458,370,928.70

Finding the Fourth Proportional to 825,702,947.90, 1,238,554,421.85 and 458,370,928.70

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Solution

The fourth proportional to 825,702,947.90, 1,238,554,421.85 and 458,370,928.70 is: 687,556,393.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,702,947.90 : 1,238,554,421.85 = 458,370,928.70 : x
  2. Step 2: Convert to fraction form
    825,702,947.90/1,238,554,421.85 = 458,370,928.70/x
  3. Step 3: Cross multiply
    825,702,947.90x = 1,238,554,421.85 × 458,370,928.70
  4. Step 4: Simplify right side
    825,702,947.90x = 567,717,340,588,876,032
  5. Step 5: Solve for x
    x = 567,717,340,588,876,032/825,702,947.90
  6. Step 6: Final answer
    x = 687,556,393.05

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Double scale
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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.