Home / 708,405.48-977,622.42-402,476.28

Finding the Fourth Proportional to 708,405.48, 977,622.42 and 402,476.28

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Solution

The fourth proportional to 708,405.48, 977,622.42 and 402,476.28 is: 555,430.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,405.48 : 977,622.42 = 402,476.28 : x
  2. Step 2: Convert to fraction form
    708,405.48/977,622.42 = 402,476.28/x
  3. Step 3: Cross multiply
    708,405.48x = 977,622.42 × 402,476.28
  4. Step 4: Simplify right side
    708,405.48x = 393,469,834,846.20
  5. Step 5: Solve for x
    x = 393,469,834,846.20/708,405.48
  6. Step 6: Final answer
    x = 555,430.25

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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.