Home / 991,948.02-1,487,889.09-430,982.52

Finding the Fourth Proportional to 991,948.02, 1,487,889.09 and 430,982.52

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Solution

The fourth proportional to 991,948.02, 1,487,889.09 and 430,982.52 is: 646,459.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,948.02 : 1,487,889.09 = 430,982.52 : x
  2. Step 2: Convert to fraction form
    991,948.02/1,487,889.09 = 430,982.52/x
  3. Step 3: Cross multiply
    991,948.02x = 1,487,889.09 × 430,982.52
  4. Step 4: Simplify right side
    991,948.02x = 641,254,189,488.71
  5. Step 5: Solve for x
    x = 641,254,189,488.71/991,948.02
  6. Step 6: Final answer
    x = 646,459.47

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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.