Home / 900,109.02-1,242,150.90-512,913.42

Finding the Fourth Proportional to 900,109.02, 1,242,150.90 and 512,913.42

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Solution

The fourth proportional to 900,109.02, 1,242,150.90 and 512,913.42 is: 707,820.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,109.02 : 1,242,150.90 = 512,913.42 : x
  2. Step 2: Convert to fraction form
    900,109.02/1,242,150.90 = 512,913.42/x
  3. Step 3: Cross multiply
    900,109.02x = 1,242,150.90 × 512,913.42
  4. Step 4: Simplify right side
    900,109.02x = 637,115,866,275.08
  5. Step 5: Solve for x
    x = 637,115,866,275.08/900,109.02
  6. Step 6: Final answer
    x = 707,820.78

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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.