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Finding the Fourth Proportional to 646,705.68, 892,480.92 and 360,225.36

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Solution

The fourth proportional to 646,705.68, 892,480.92 and 360,225.36 is: 497,126.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,705.68 : 892,480.92 = 360,225.36 : x
  2. Step 2: Convert to fraction form
    646,705.68/892,480.92 = 360,225.36/x
  3. Step 3: Cross multiply
    646,705.68x = 892,480.92 × 360,225.36
  4. Step 4: Simplify right side
    646,705.68x = 321,494,260,700.13
  5. Step 5: Solve for x
    x = 321,494,260,700.13/646,705.68
  6. Step 6: Final answer
    x = 497,126.08

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1.5x scale

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.