Home / 679,023,950.40-1,018,535,925.60-638,847,010.80

Finding the Fourth Proportional to 679,023,950.40, 1,018,535,925.60 and 638,847,010.80

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Solution

The fourth proportional to 679,023,950.40, 1,018,535,925.60 and 638,847,010.80 is: 958,270,516.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,023,950.40 : 1,018,535,925.60 = 638,847,010.80 : x
  2. Step 2: Convert to fraction form
    679,023,950.40/1,018,535,925.60 = 638,847,010.80/x
  3. Step 3: Cross multiply
    679,023,950.40x = 1,018,535,925.60 × 638,847,010.80
  4. Step 4: Simplify right side
    679,023,950.40x = 650,688,631,461,971,200
  5. Step 5: Solve for x
    x = 650,688,631,461,971,200/679,023,950.40
  6. Step 6: Final answer
    x = 958,270,516.20

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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.