Home / 712,521.65-983,280.51-385,833.66

Finding the Fourth Proportional to 712,521.65, 983,280.51 and 385,833.66

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Solution

The fourth proportional to 712,521.65, 983,280.51 and 385,833.66 is: 532,450.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,521.65 : 983,280.51 = 385,833.66 : x
  2. Step 2: Convert to fraction form
    712,521.65/983,280.51 = 385,833.66/x
  3. Step 3: Cross multiply
    712,521.65x = 983,280.51 × 385,833.66
  4. Step 4: Simplify right side
    712,521.65x = 379,382,717,979.97
  5. Step 5: Solve for x
    x = 379,382,717,979.97/712,521.65
  6. Step 6: Final answer
    x = 532,450.80

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1.5x scale

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.