Home / 687,748,468.10-1,031,622,702.15-442,860,455.30

Finding the Fourth Proportional to 687,748,468.10, 1,031,622,702.15 and 442,860,455.30

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Solution

The fourth proportional to 687,748,468.10, 1,031,622,702.15 and 442,860,455.30 is: 664,290,682.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,748,468.10 : 1,031,622,702.15 = 442,860,455.30 : x
  2. Step 2: Convert to fraction form
    687,748,468.10/1,031,622,702.15 = 442,860,455.30/x
  3. Step 3: Cross multiply
    687,748,468.10x = 1,031,622,702.15 × 442,860,455.30
  4. Step 4: Simplify right side
    687,748,468.10x = 456,864,899,571,965,312
  5. Step 5: Solve for x
    x = 456,864,899,571,965,312/687,748,468.10
  6. Step 6: Final answer
    x = 664,290,682.95

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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.