Home / 431,210,852.20-646,816,278.30-172,298,045.80

Finding the Fourth Proportional to 431,210,852.20, 646,816,278.30 and 172,298,045.80

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Solution

The fourth proportional to 431,210,852.20, 646,816,278.30 and 172,298,045.80 is: 258,447,068.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,210,852.20 : 646,816,278.30 = 172,298,045.80 : x
  2. Step 2: Convert to fraction form
    431,210,852.20/646,816,278.30 = 172,298,045.80/x
  3. Step 3: Cross multiply
    431,210,852.20x = 646,816,278.30 × 172,298,045.80
  4. Step 4: Simplify right side
    431,210,852.20x = 111,445,180,742,718,944
  5. Step 5: Solve for x
    x = 111,445,180,742,718,944/431,210,852.20
  6. Step 6: Final answer
    x = 258,447,068.70

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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.