Home / 646,429,017.68-969,779,707.37-209,695,600.70

Finding the Fourth Proportional to 646,429,017.68, 969,779,707.37 and 209,695,600.70

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Solution

The fourth proportional to 646,429,017.68, 969,779,707.37 and 209,695,600.70 is: 314,587,576.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,429,017.68 : 969,779,707.37 = 209,695,600.70 : x
  2. Step 2: Convert to fraction form
    646,429,017.68/969,779,707.37 = 209,695,600.70/x
  3. Step 3: Cross multiply
    646,429,017.68x = 969,779,707.37 × 209,695,600.70
  4. Step 4: Simplify right side
    646,429,017.68x = 203,358,538,283,622,368
  5. Step 5: Solve for x
    x = 203,358,538,283,622,368/646,429,017.68
  6. Step 6: Final answer
    x = 314,587,576.86

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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.