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Finding the Fourth Proportional to 724,036.78, 999,170.76 and 401,798.74

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Solution

The fourth proportional to 724,036.78, 999,170.76 and 401,798.74 is: 554,482.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,036.78 : 999,170.76 = 401,798.74 : x
  2. Step 2: Convert to fraction form
    724,036.78/999,170.76 = 401,798.74/x
  3. Step 3: Cross multiply
    724,036.78x = 999,170.76 × 401,798.74
  4. Step 4: Simplify right side
    724,036.78x = 401,465,552,412.84
  5. Step 5: Solve for x
    x = 401,465,552,412.84/724,036.78
  6. Step 6: Final answer
    x = 554,482.26

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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.