Home / 1,209,130.91-1,812,321.38-631,864.16

Finding the Fourth Proportional to 1,209,130.91, 1,812,321.38 and 631,864.16

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Solution

The fourth proportional to 1,209,130.91, 1,812,321.38 and 631,864.16 is: 947,077.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,130.91 : 1,812,321.38 = 631,864.16 : x
  2. Step 2: Convert to fraction form
    1,209,130.91/1,812,321.38 = 631,864.16/x
  3. Step 3: Cross multiply
    1,209,130.91x = 1,812,321.38 × 631,864.16
  4. Step 4: Simplify right side
    1,209,130.91x = 1,145,140,926,423.74
  5. Step 5: Solve for x
    x = 1,145,140,926,423.74/1,209,130.91
  6. Step 6: Final answer
    x = 947,077.70

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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.