Home / 13,120,989,321.60-18,106,953,472.80-7,406,476,853.76

Finding the Fourth Proportional to 13,120,989,321.60, 18,106,953,472.80 and 7,406,476,853.76

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Solution

The fourth proportional to 13,120,989,321.60, 18,106,953,472.80 and 7,406,476,853.76 is: 10,220,931,402.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,120,989,321.60 : 18,106,953,472.80 = 7,406,476,853.76 : x
  2. Step 2: Convert to fraction form
    13,120,989,321.60/18,106,953,472.80 = 7,406,476,853.76/x
  3. Step 3: Cross multiply
    13,120,989,321.60x = 18,106,953,472.80 × 7,406,476,853.76
  4. Step 4: Simplify right side
    13,120,989,321.60x = 134,108,731,788,402,442,240
  5. Step 5: Solve for x
    x = 134,108,731,788,402,442,240/13,120,989,321.60
  6. Step 6: Final answer
    x = 10,220,931,402.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.