Home / 710,535.20-1,064,420.40-429,216.80

Finding the Fourth Proportional to 710,535.20, 1,064,420.40 and 429,216.80

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Solution

The fourth proportional to 710,535.20, 1,064,420.40 and 429,216.80 is: 642,990.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,535.20 : 1,064,420.40 = 429,216.80 : x
  2. Step 2: Convert to fraction form
    710,535.20/1,064,420.40 = 429,216.80/x
  3. Step 3: Cross multiply
    710,535.20x = 1,064,420.40 × 429,216.80
  4. Step 4: Simplify right side
    710,535.20x = 456,867,117,942.72
  5. Step 5: Solve for x
    x = 456,867,117,942.72/710,535.20
  6. Step 6: Final answer
    x = 642,990.13

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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.