Home / 709,738.10-1,064,607.15-289,315.70

Finding the Fourth Proportional to 709,738.10, 1,064,607.15 and 289,315.70

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Solution

The fourth proportional to 709,738.10, 1,064,607.15 and 289,315.70 is: 433,973.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,738.10 : 1,064,607.15 = 289,315.70 : x
  2. Step 2: Convert to fraction form
    709,738.10/1,064,607.15 = 289,315.70/x
  3. Step 3: Cross multiply
    709,738.10x = 1,064,607.15 × 289,315.70
  4. Step 4: Simplify right side
    709,738.10x = 308,007,562,827.26
  5. Step 5: Solve for x
    x = 308,007,562,827.26/709,738.10
  6. Step 6: Final answer
    x = 433,973.55

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Double scale
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Similar ratio
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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.