Home / 1,488,707.90-2,227,156.95-1,291,221.80

Finding the Fourth Proportional to 1,488,707.90, 2,227,156.95 and 1,291,221.80

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Solution

The fourth proportional to 1,488,707.90, 2,227,156.95 and 1,291,221.80 is: 1,931,711.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,488,707.90 : 2,227,156.95 = 1,291,221.80 : x
  2. Step 2: Convert to fraction form
    1,488,707.90/2,227,156.95 = 1,291,221.80/x
  3. Step 3: Cross multiply
    1,488,707.90x = 2,227,156.95 × 1,291,221.80
  4. Step 4: Simplify right side
    1,488,707.90x = 2,875,753,605,861.51
  5. Step 5: Solve for x
    x = 2,875,753,605,861.51/1,488,707.90
  6. Step 6: Final answer
    x = 1,931,711.12

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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.