Home / 431,292,059.70-646,938,089.55-172,692,869.10

Finding the Fourth Proportional to 431,292,059.70, 646,938,089.55 and 172,692,869.10

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Solution

The fourth proportional to 431,292,059.70, 646,938,089.55 and 172,692,869.10 is: 259,039,303.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,292,059.70 : 646,938,089.55 = 172,692,869.10 : x
  2. Step 2: Convert to fraction form
    431,292,059.70/646,938,089.55 = 172,692,869.10/x
  3. Step 3: Cross multiply
    431,292,059.70x = 646,938,089.55 × 172,692,869.10
  4. Step 4: Simplify right side
    431,292,059.70x = 111,721,594,814,462,208
  5. Step 5: Solve for x
    x = 111,721,594,814,462,208/431,292,059.70
  6. Step 6: Final answer
    x = 259,039,303.65

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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.