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Finding the Fourth Proportional to 1,351,300, 1,864,341.12 and 778,326.88

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Solution

The fourth proportional to 1,351,300, 1,864,341.12 and 778,326.88 is: 1,073,830.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,351,300 : 1,864,341.12 = 778,326.88 : x
  2. Step 2: Convert to fraction form
    1,351,300/1,864,341.12 = 778,326.88/x
  3. Step 3: Cross multiply
    1,351,300x = 1,864,341.12 × 778,326.88
  4. Step 4: Simplify right side
    1,351,300x = 1,451,066,807,185.31
  5. Step 5: Solve for x
    x = 1,451,066,807,185.31/1,351,300
  6. Step 6: Final answer
    x = 1,073,830.24

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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.