Home / 687,745,977.60-1,031,618,966.40-442,857,964.80

Finding the Fourth Proportional to 687,745,977.60, 1,031,618,966.40 and 442,857,964.80

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Solution

The fourth proportional to 687,745,977.60, 1,031,618,966.40 and 442,857,964.80 is: 664,286,947.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,745,977.60 : 1,031,618,966.40 = 442,857,964.80 : x
  2. Step 2: Convert to fraction form
    687,745,977.60/1,031,618,966.40 = 442,857,964.80/x
  3. Step 3: Cross multiply
    687,745,977.60x = 1,031,618,966.40 × 442,857,964.80
  4. Step 4: Simplify right side
    687,745,977.60x = 456,860,675,908,983,616
  5. Step 5: Solve for x
    x = 456,860,675,908,983,616/687,745,977.60
  6. Step 6: Final answer
    x = 664,286,947.20

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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.