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Finding the Fourth Proportional to 895,978.38, 1,343,943 and 390,539.04

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Solution

The fourth proportional to 895,978.38, 1,343,943 and 390,539.04 is: 585,797.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    895,978.38 : 1,343,943 = 390,539.04 : x
  2. Step 2: Convert to fraction form
    895,978.38/1,343,943 = 390,539.04/x
  3. Step 3: Cross multiply
    895,978.38x = 1,343,943 × 390,539.04
  4. Step 4: Simplify right side
    895,978.38x = 524,862,209,034.72
  5. Step 5: Solve for x
    x = 524,862,209,034.72/895,978.38
  6. Step 6: Final answer
    x = 585,797.85

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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.