Home / 710,515.90-1,065,385.05-289,315.90

Finding the Fourth Proportional to 710,515.90, 1,065,385.05 and 289,315.90

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Solution

The fourth proportional to 710,515.90, 1,065,385.05 and 289,315.90 is: 433,815.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,515.90 : 1,065,385.05 = 289,315.90 : x
  2. Step 2: Convert to fraction form
    710,515.90/1,065,385.05 = 289,315.90/x
  3. Step 3: Cross multiply
    710,515.90x = 1,065,385.05 × 289,315.90
  4. Step 4: Simplify right side
    710,515.90x = 308,232,834,587.30
  5. Step 5: Solve for x
    x = 308,232,834,587.30/710,515.90
  6. Step 6: Final answer
    x = 433,815.53

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1.5x scale

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.