Home / 1,142,139.67-1,713,213.36-289,210.91

Finding the Fourth Proportional to 1,142,139.67, 1,713,213.36 and 289,210.91

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Solution

The fourth proportional to 1,142,139.67, 1,713,213.36 and 289,210.91 is: 433,817.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,142,139.67 : 1,713,213.36 = 289,210.91 : x
  2. Step 2: Convert to fraction form
    1,142,139.67/1,713,213.36 = 289,210.91/x
  3. Step 3: Cross multiply
    1,142,139.67x = 1,713,213.36 × 289,210.91
  4. Step 4: Simplify right side
    1,142,139.67x = 495,479,999,152.79
  5. Step 5: Solve for x
    x = 495,479,999,152.79/1,142,139.67
  6. Step 6: Final answer
    x = 433,817.35

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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.