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Finding the Fourth Proportional to 560,371.95, 773,077.65 and 390,704.49

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Solution

The fourth proportional to 560,371.95, 773,077.65 and 390,704.49 is: 539,007.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,371.95 : 773,077.65 = 390,704.49 : x
  2. Step 2: Convert to fraction form
    560,371.95/773,077.65 = 390,704.49/x
  3. Step 3: Cross multiply
    560,371.95x = 773,077.65 × 390,704.49
  4. Step 4: Simplify right side
    560,371.95x = 302,044,908,973.65
  5. Step 5: Solve for x
    x = 302,044,908,973.65/560,371.95
  6. Step 6: Final answer
    x = 539,007.90

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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.