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Finding the Fourth Proportional to 566,307.99, 781,510.55 and 311,665.05

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Solution

The fourth proportional to 566,307.99, 781,510.55 and 311,665.05 is: 430,100.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,307.99 : 781,510.55 = 311,665.05 : x
  2. Step 2: Convert to fraction form
    566,307.99/781,510.55 = 311,665.05/x
  3. Step 3: Cross multiply
    566,307.99x = 781,510.55 × 311,665.05
  4. Step 4: Simplify right side
    566,307.99x = 243,569,523,082.95
  5. Step 5: Solve for x
    x = 243,569,523,082.95/566,307.99
  6. Step 6: Final answer
    x = 430,100.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.