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Finding the Fourth Proportional to 628,510.65, 867,343.08 and 342,030.66

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Solution

The fourth proportional to 628,510.65, 867,343.08 and 342,030.66 is: 472,001.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,510.65 : 867,343.08 = 342,030.66 : x
  2. Step 2: Convert to fraction form
    628,510.65/867,343.08 = 342,030.66/x
  3. Step 3: Cross multiply
    628,510.65x = 867,343.08 × 342,030.66
  4. Step 4: Simplify right side
    628,510.65x = 296,657,926,098.83
  5. Step 5: Solve for x
    x = 296,657,926,098.83/628,510.65
  6. Step 6: Final answer
    x = 472,001.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.