Home / 1,209,129.41-1,812,319.13-631,862.66

Finding the Fourth Proportional to 1,209,129.41, 1,812,319.13 and 631,862.66

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Solution

The fourth proportional to 1,209,129.41, 1,812,319.13 and 631,862.66 is: 947,075.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,129.41 : 1,812,319.13 = 631,862.66 : x
  2. Step 2: Convert to fraction form
    1,209,129.41/1,812,319.13 = 631,862.66/x
  3. Step 3: Cross multiply
    1,209,129.41x = 1,812,319.13 × 631,862.66
  4. Step 4: Simplify right side
    1,209,129.41x = 1,145,136,786,250.69
  5. Step 5: Solve for x
    x = 1,145,136,786,250.69/1,209,129.41
  6. Step 6: Final answer
    x = 947,075.46

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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.