Home / 1,210,640,743.20-1,815,961,114.80-917,923,040.40

Finding the Fourth Proportional to 1,210,640,743.20, 1,815,961,114.80 and 917,923,040.40

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Solution

The fourth proportional to 1,210,640,743.20, 1,815,961,114.80 and 917,923,040.40 is: 1,376,884,560.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,640,743.20 : 1,815,961,114.80 = 917,923,040.40 : x
  2. Step 2: Convert to fraction form
    1,210,640,743.20/1,815,961,114.80 = 917,923,040.40/x
  3. Step 3: Cross multiply
    1,210,640,743.20x = 1,815,961,114.80 × 917,923,040.40
  4. Step 4: Simplify right side
    1,210,640,743.20x = 1,666,912,547,745,389,312
  5. Step 5: Solve for x
    x = 1,666,912,547,745,389,312/1,210,640,743.20
  6. Step 6: Final answer
    x = 1,376,884,560.60

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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.