Home / 770,143.80-1,154,438.10-349,721.40

Finding the Fourth Proportional to 770,143.80, 1,154,438.10 and 349,721.40

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Solution

The fourth proportional to 770,143.80, 1,154,438.10 and 349,721.40 is: 524,228.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,143.80 : 1,154,438.10 = 349,721.40 : x
  2. Step 2: Convert to fraction form
    770,143.80/1,154,438.10 = 349,721.40/x
  3. Step 3: Cross multiply
    770,143.80x = 1,154,438.10 × 349,721.40
  4. Step 4: Simplify right side
    770,143.80x = 403,731,708,545.34
  5. Step 5: Solve for x
    x = 403,731,708,545.34/770,143.80
  6. Step 6: Final answer
    x = 524,228.99

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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.