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Finding the Fourth Proportional to 606,959.40, 910,989.90 and 307,648.20

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Solution

The fourth proportional to 606,959.40, 910,989.90 and 307,648.20 is: 461,751.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,959.40 : 910,989.90 = 307,648.20 : x
  2. Step 2: Convert to fraction form
    606,959.40/910,989.90 = 307,648.20/x
  3. Step 3: Cross multiply
    606,959.40x = 910,989.90 × 307,648.20
  4. Step 4: Simplify right side
    606,959.40x = 280,264,402,953.18
  5. Step 5: Solve for x
    x = 280,264,402,953.18/606,959.40
  6. Step 6: Final answer
    x = 461,751.48

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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.