Home / 786,396,423.71-1,085,253,129.57-429,183,759.35

Finding the Fourth Proportional to 786,396,423.71, 1,085,253,129.57 and 429,183,759.35

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Solution

The fourth proportional to 786,396,423.71, 1,085,253,129.57 and 429,183,759.35 is: 592,287,813.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,396,423.71 : 1,085,253,129.57 = 429,183,759.35 : x
  2. Step 2: Convert to fraction form
    786,396,423.71/1,085,253,129.57 = 429,183,759.35/x
  3. Step 3: Cross multiply
    786,396,423.71x = 1,085,253,129.57 × 429,183,759.35
  4. Step 4: Simplify right side
    786,396,423.71x = 465,773,017,989,779,008
  5. Step 5: Solve for x
    x = 465,773,017,989,779,008/786,396,423.71
  6. Step 6: Final answer
    x = 592,287,813.05

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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.