Home / 431,569,349.60-646,928,871.60-213,253,386.80

Finding the Fourth Proportional to 431,569,349.60, 646,928,871.60 and 213,253,386.80

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Solution

The fourth proportional to 431,569,349.60, 646,928,871.60 and 213,253,386.80 is: 319,669,997.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,569,349.60 : 646,928,871.60 = 213,253,386.80 : x
  2. Step 2: Convert to fraction form
    431,569,349.60/646,928,871.60 = 213,253,386.80/x
  3. Step 3: Cross multiply
    431,569,349.60x = 646,928,871.60 × 213,253,386.80
  4. Step 4: Simplify right side
    431,569,349.60x = 137,959,772,887,402,352
  5. Step 5: Solve for x
    x = 137,959,772,887,402,352/431,569,349.60
  6. Step 6: Final answer
    x = 319,669,997.45

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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.