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Finding the Fourth Proportional to 607,312.40, 911,519.40 and 308,001.20

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Solution

The fourth proportional to 607,312.40, 911,519.40 and 308,001.20 is: 462,281.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,312.40 : 911,519.40 = 308,001.20 : x
  2. Step 2: Convert to fraction form
    607,312.40/911,519.40 = 308,001.20/x
  3. Step 3: Cross multiply
    607,312.40x = 911,519.40 × 308,001.20
  4. Step 4: Simplify right side
    607,312.40x = 280,749,069,023.28
  5. Step 5: Solve for x
    x = 280,749,069,023.28/607,312.40
  6. Step 6: Final answer
    x = 462,281.14

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1.5x scale

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.