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Finding the Fourth Proportional to 910,168.83, 1,255,978.80 and 502,309.02

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Solution

The fourth proportional to 910,168.83, 1,255,978.80 and 502,309.02 is: 693,156.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,168.83 : 1,255,978.80 = 502,309.02 : x
  2. Step 2: Convert to fraction form
    910,168.83/1,255,978.80 = 502,309.02/x
  3. Step 3: Cross multiply
    910,168.83x = 1,255,978.80 × 502,309.02
  4. Step 4: Simplify right side
    910,168.83x = 630,889,480,168.78
  5. Step 5: Solve for x
    x = 630,889,480,168.78/910,168.83
  6. Step 6: Final answer
    x = 693,156.54

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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.