Home / 710,520.40-1,065,391.80-289,320.40

Finding the Fourth Proportional to 710,520.40, 1,065,391.80 and 289,320.40

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Solution

The fourth proportional to 710,520.40, 1,065,391.80 and 289,320.40 is: 433,822.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,520.40 : 1,065,391.80 = 289,320.40 : x
  2. Step 2: Convert to fraction form
    710,520.40/1,065,391.80 = 289,320.40/x
  3. Step 3: Cross multiply
    710,520.40x = 1,065,391.80 × 289,320.40
  4. Step 4: Simplify right side
    710,520.40x = 308,239,581,732.72
  5. Step 5: Solve for x
    x = 308,239,581,732.72/710,520.40
  6. Step 6: Final answer
    x = 433,822.28

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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.