Home / 909,148.20-1,363,427.02-429,301.76

Finding the Fourth Proportional to 909,148.20, 1,363,427.02 and 429,301.76

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Solution

The fourth proportional to 909,148.20, 1,363,427.02 and 429,301.76 is: 643,813.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,148.20 : 1,363,427.02 = 429,301.76 : x
  2. Step 2: Convert to fraction form
    909,148.20/1,363,427.02 = 429,301.76/x
  3. Step 3: Cross multiply
    909,148.20x = 1,363,427.02 × 429,301.76
  4. Step 4: Simplify right side
    909,148.20x = 585,321,619,317.56
  5. Step 5: Solve for x
    x = 585,321,619,317.56/909,148.20
  6. Step 6: Final answer
    x = 643,813.21

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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.