Home / 918,122.90-1,266,984.36-510,214.28

Finding the Fourth Proportional to 918,122.90, 1,266,984.36 and 510,214.28

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Solution

The fourth proportional to 918,122.90, 1,266,984.36 and 510,214.28 is: 704,081.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,122.90 : 1,266,984.36 = 510,214.28 : x
  2. Step 2: Convert to fraction form
    918,122.90/1,266,984.36 = 510,214.28/x
  3. Step 3: Cross multiply
    918,122.90x = 1,266,984.36 × 510,214.28
  4. Step 4: Simplify right side
    918,122.90x = 646,433,506,673.74
  5. Step 5: Solve for x
    x = 646,433,506,673.74/918,122.90
  6. Step 6: Final answer
    x = 704,081.68

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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.