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Finding the Fourth Proportional to 660,002.90, 910,804.38 and 358,196.90

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Solution

The fourth proportional to 660,002.90, 910,804.38 and 358,196.90 is: 494,311.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,002.90 : 910,804.38 = 358,196.90 : x
  2. Step 2: Convert to fraction form
    660,002.90/910,804.38 = 358,196.90/x
  3. Step 3: Cross multiply
    660,002.90x = 910,804.38 × 358,196.90
  4. Step 4: Simplify right side
    660,002.90x = 326,247,306,663.29
  5. Step 5: Solve for x
    x = 326,247,306,663.29/660,002.90
  6. Step 6: Final answer
    x = 494,311.93

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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.