Home / 858,526.33-1,287,623.42-431,948.05

Finding the Fourth Proportional to 858,526.33, 1,287,623.42 and 431,948.05

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Solution

The fourth proportional to 858,526.33, 1,287,623.42 and 431,948.05 is: 647,838.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,526.33 : 1,287,623.42 = 431,948.05 : x
  2. Step 2: Convert to fraction form
    858,526.33/1,287,623.42 = 431,948.05/x
  3. Step 3: Cross multiply
    858,526.33x = 1,287,623.42 × 431,948.05
  4. Step 4: Simplify right side
    858,526.33x = 556,186,421,638.61
  5. Step 5: Solve for x
    x = 556,186,421,638.61/858,526.33
  6. Step 6: Final answer
    x = 647,838.52

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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.