Home / 708,013.89-977,060.40-402,090.20

Finding the Fourth Proportional to 708,013.89, 977,060.40 and 402,090.20

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Solution

The fourth proportional to 708,013.89, 977,060.40 and 402,090.20 is: 554,885.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,013.89 : 977,060.40 = 402,090.20 : x
  2. Step 2: Convert to fraction form
    708,013.89/977,060.40 = 402,090.20/x
  3. Step 3: Cross multiply
    708,013.89x = 977,060.40 × 402,090.20
  4. Step 4: Simplify right side
    708,013.89x = 392,866,412,797.78
  5. Step 5: Solve for x
    x = 392,866,412,797.78/708,013.89
  6. Step 6: Final answer
    x = 554,885.18

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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.