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Finding the Fourth Proportional to 1,361,764.32, 1,879,565.76 and 788,712

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Solution

The fourth proportional to 1,361,764.32, 1,879,565.76 and 788,712 is: 1,088,614.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,361,764.32 : 1,879,565.76 = 788,712 : x
  2. Step 2: Convert to fraction form
    1,361,764.32/1,879,565.76 = 788,712/x
  3. Step 3: Cross multiply
    1,361,764.32x = 1,879,565.76 × 788,712
  4. Step 4: Simplify right side
    1,361,764.32x = 1,482,436,069,701.12
  5. Step 5: Solve for x
    x = 1,482,436,069,701.12/1,361,764.32
  6. Step 6: Final answer
    x = 1,088,614.27

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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.