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Finding the Fourth Proportional to 1,357,736.82, 1,873,468.53 and 784,666.32

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Solution

The fourth proportional to 1,357,736.82, 1,873,468.53 and 784,666.32 is: 1,082,719.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,357,736.82 : 1,873,468.53 = 784,666.32 : x
  2. Step 2: Convert to fraction form
    1,357,736.82/1,873,468.53 = 784,666.32/x
  3. Step 3: Cross multiply
    1,357,736.82x = 1,873,468.53 × 784,666.32
  4. Step 4: Simplify right side
    1,357,736.82x = 1,470,047,657,070.91
  5. Step 5: Solve for x
    x = 1,470,047,657,070.91/1,357,736.82
  6. Step 6: Final answer
    x = 1,082,719.15

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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.