Home / 390,962,386.60-586,294,280.70-118,242,514.60

Finding the Fourth Proportional to 390,962,386.60, 586,294,280.70 and 118,242,514.60

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Solution

The fourth proportional to 390,962,386.60, 586,294,280.70 and 118,242,514.60 is: 177,318,617.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,962,386.60 : 586,294,280.70 = 118,242,514.60 : x
  2. Step 2: Convert to fraction form
    390,962,386.60/586,294,280.70 = 118,242,514.60/x
  3. Step 3: Cross multiply
    390,962,386.60x = 586,294,280.70 × 118,242,514.60
  4. Step 4: Simplify right side
    390,962,386.60x = 69,324,910,045,566,248
  5. Step 5: Solve for x
    x = 69,324,910,045,566,248/390,962,386.60
  6. Step 6: Final answer
    x = 177,318,617.91

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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.