Home / 1,398,681,765.67-1,930,130,140.03-772,136,708.71

Finding the Fourth Proportional to 1,398,681,765.67, 1,930,130,140.03 and 772,136,708.71

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Solution

The fourth proportional to 1,398,681,765.67, 1,930,130,140.03 and 772,136,708.71 is: 1,065,520,671.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,681,765.67 : 1,930,130,140.03 = 772,136,708.71 : x
  2. Step 2: Convert to fraction form
    1,398,681,765.67/1,930,130,140.03 = 772,136,708.71/x
  3. Step 3: Cross multiply
    1,398,681,765.67x = 1,930,130,140.03 × 772,136,708.71
  4. Step 4: Simplify right side
    1,398,681,765.67x = 1,490,324,333,704,735,744
  5. Step 5: Solve for x
    x = 1,490,324,333,704,735,744/1,398,681,765.67
  6. Step 6: Final answer
    x = 1,065,520,671.17

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Double scale
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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.