Home / 787,117.30-1,180,671.90-307,393.79

Finding the Fourth Proportional to 787,117.30, 1,180,671.90 and 307,393.79

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Solution

The fourth proportional to 787,117.30, 1,180,671.90 and 307,393.79 is: 461,089.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,117.30 : 1,180,671.90 = 307,393.79 : x
  2. Step 2: Convert to fraction form
    787,117.30/1,180,671.90 = 307,393.79/x
  3. Step 3: Cross multiply
    787,117.30x = 1,180,671.90 × 307,393.79
  4. Step 4: Simplify right side
    787,117.30x = 362,931,203,031.42
  5. Step 5: Solve for x
    x = 362,931,203,031.42/787,117.30
  6. Step 6: Final answer
    x = 461,089.10

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Double scale
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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.