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Finding the Fourth Proportional to 691,509, 954,282.60 and 373,557

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Solution

The fourth proportional to 691,509, 954,282.60 and 373,557 is: 515,508.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,509 : 954,282.60 = 373,557 : x
  2. Step 2: Convert to fraction form
    691,509/954,282.60 = 373,557/x
  3. Step 3: Cross multiply
    691,509x = 954,282.60 × 373,557
  4. Step 4: Simplify right side
    691,509x = 356,478,945,208.20
  5. Step 5: Solve for x
    x = 356,478,945,208.20/691,509
  6. Step 6: Final answer
    x = 515,508.76

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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.