Home / 426,011,313.47-639,409,784.97-216,069,343.81

Finding the Fourth Proportional to 426,011,313.47, 639,409,784.97 and 216,069,343.81

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Solution

The fourth proportional to 426,011,313.47, 639,409,784.97 and 216,069,343.81 is: 324,303,248.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,011,313.47 : 639,409,784.97 = 216,069,343.81 : x
  2. Step 2: Convert to fraction form
    426,011,313.47/639,409,784.97 = 216,069,343.81/x
  3. Step 3: Cross multiply
    426,011,313.47x = 639,409,784.97 × 216,069,343.81
  4. Step 4: Simplify right side
    426,011,313.47x = 138,156,852,663,955,168
  5. Step 5: Solve for x
    x = 138,156,852,663,955,168/426,011,313.47
  6. Step 6: Final answer
    x = 324,303,248.05

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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.