Home / 478,334,639.79-660,101,811.08-258,318,065.79

Finding the Fourth Proportional to 478,334,639.79, 660,101,811.08 and 258,318,065.79

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Solution

The fourth proportional to 478,334,639.79, 660,101,811.08 and 258,318,065.79 is: 356,478,935.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,334,639.79 : 660,101,811.08 = 258,318,065.79 : x
  2. Step 2: Convert to fraction form
    478,334,639.79/660,101,811.08 = 258,318,065.79/x
  3. Step 3: Cross multiply
    478,334,639.79x = 660,101,811.08 × 258,318,065.79
  4. Step 4: Simplify right side
    478,334,639.79x = 170,516,223,061,370,016
  5. Step 5: Solve for x
    x = 170,516,223,061,370,016/478,334,639.79
  6. Step 6: Final answer
    x = 356,478,935.20

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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.