Home / 708,402.20-977,586.40-386,111.28

Finding the Fourth Proportional to 708,402.20, 977,586.40 and 386,111.28

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Solution

The fourth proportional to 708,402.20, 977,586.40 and 386,111.28 is: 532,828.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,402.20 : 977,586.40 = 386,111.28 : x
  2. Step 2: Convert to fraction form
    708,402.20/977,586.40 = 386,111.28/x
  3. Step 3: Cross multiply
    708,402.20x = 977,586.40 × 386,111.28
  4. Step 4: Simplify right side
    708,402.20x = 377,457,136,214.59
  5. Step 5: Solve for x
    x = 377,457,136,214.59/708,402.20
  6. Step 6: Final answer
    x = 532,828.86

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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.