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Finding the Fourth Proportional to 807,278.64, 1,113,987 and 480,574.32

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Solution

The fourth proportional to 807,278.64, 1,113,987 and 480,574.32 is: 663,158.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,278.64 : 1,113,987 = 480,574.32 : x
  2. Step 2: Convert to fraction form
    807,278.64/1,113,987 = 480,574.32/x
  3. Step 3: Cross multiply
    807,278.64x = 1,113,987 × 480,574.32
  4. Step 4: Simplify right side
    807,278.64x = 535,353,545,013.84
  5. Step 5: Solve for x
    x = 535,353,545,013.84/807,278.64
  6. Step 6: Final answer
    x = 663,158.32

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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.