Home / 679,023,948.90-1,018,535,923.35-638,847,009.30

Finding the Fourth Proportional to 679,023,948.90, 1,018,535,923.35 and 638,847,009.30

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Solution

The fourth proportional to 679,023,948.90, 1,018,535,923.35 and 638,847,009.30 is: 958,270,513.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,023,948.90 : 1,018,535,923.35 = 638,847,009.30 : x
  2. Step 2: Convert to fraction form
    679,023,948.90/1,018,535,923.35 = 638,847,009.30/x
  3. Step 3: Cross multiply
    679,023,948.90x = 1,018,535,923.35 × 638,847,009.30
  4. Step 4: Simplify right side
    679,023,948.90x = 650,688,628,496,761,472
  5. Step 5: Solve for x
    x = 650,688,628,496,761,472/679,023,948.90
  6. Step 6: Final answer
    x = 958,270,513.95

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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.