Home / 1,380,459.02-2,070,985.45-688,403.12

Finding the Fourth Proportional to 1,380,459.02, 2,070,985.45 and 688,403.12

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Solution

The fourth proportional to 1,380,459.02, 2,070,985.45 and 688,403.12 is: 1,032,752.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,459.02 : 2,070,985.45 = 688,403.12 : x
  2. Step 2: Convert to fraction form
    1,380,459.02/2,070,985.45 = 688,403.12/x
  3. Step 3: Cross multiply
    1,380,459.02x = 2,070,985.45 × 688,403.12
  4. Step 4: Simplify right side
    1,380,459.02x = 1,425,672,845,254.60
  5. Step 5: Solve for x
    x = 1,425,672,845,254.60/1,380,459.02
  6. Step 6: Final answer
    x = 1,032,752.75

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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.