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Finding the Fourth Proportional to 660,373.72, 911,316.09 and 358,567.72

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Solution

The fourth proportional to 660,373.72, 911,316.09 and 358,567.72 is: 494,823.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,373.72 : 911,316.09 = 358,567.72 : x
  2. Step 2: Convert to fraction form
    660,373.72/911,316.09 = 358,567.72/x
  3. Step 3: Cross multiply
    660,373.72x = 911,316.09 × 358,567.72
  4. Step 4: Simplify right side
    660,373.72x = 326,768,532,590.62
  5. Step 5: Solve for x
    x = 326,768,532,590.62/660,373.72
  6. Step 6: Final answer
    x = 494,823.65

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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.