Home / 1,390,358,439.40-2,080,162,887.90-906,629,031.40

Finding the Fourth Proportional to 1,390,358,439.40, 2,080,162,887.90 and 906,629,031.40

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Solution

The fourth proportional to 1,390,358,439.40, 2,080,162,887.90 and 906,629,031.40 is: 1,356,438,750.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,358,439.40 : 2,080,162,887.90 = 906,629,031.40 : x
  2. Step 2: Convert to fraction form
    1,390,358,439.40/2,080,162,887.90 = 906,629,031.40/x
  3. Step 3: Cross multiply
    1,390,358,439.40x = 2,080,162,887.90 × 906,629,031.40
  4. Step 4: Simplify right side
    1,390,358,439.40x = 1,885,936,064,211,003,904
  5. Step 5: Solve for x
    x = 1,885,936,064,211,003,904/1,390,358,439.40
  6. Step 6: Final answer
    x = 1,356,438,750.45

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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.