Home / 903,205,852.10-1,244,101,705.17-638,432,645.72

Finding the Fourth Proportional to 903,205,852.10, 1,244,101,705.17 and 638,432,645.72

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Solution

The fourth proportional to 903,205,852.10, 1,244,101,705.17 and 638,432,645.72 is: 879,395,479.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    903,205,852.10 : 1,244,101,705.17 = 638,432,645.72 : x
  2. Step 2: Convert to fraction form
    903,205,852.10/1,244,101,705.17 = 638,432,645.72/x
  3. Step 3: Cross multiply
    903,205,852.10x = 1,244,101,705.17 × 638,432,645.72
  4. Step 4: Simplify right side
    903,205,852.10x = 794,275,143,176,446,592
  5. Step 5: Solve for x
    x = 794,275,143,176,446,592/903,205,852.10
  6. Step 6: Final answer
    x = 879,395,479.26

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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.