Home / 988,400.48-1,482,038.78-389,036.72

Finding the Fourth Proportional to 988,400.48, 1,482,038.78 and 389,036.72

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Solution

The fourth proportional to 988,400.48, 1,482,038.78 and 389,036.72 is: 583,333.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,400.48 : 1,482,038.78 = 389,036.72 : x
  2. Step 2: Convert to fraction form
    988,400.48/1,482,038.78 = 389,036.72/x
  3. Step 3: Cross multiply
    988,400.48x = 1,482,038.78 × 389,036.72
  4. Step 4: Simplify right side
    988,400.48x = 576,567,507,643.92
  5. Step 5: Solve for x
    x = 576,567,507,643.92/988,400.48
  6. Step 6: Final answer
    x = 583,333.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.