Home / 681,398,430.94-1,021,688,274.03-266,380,948.72

Finding the Fourth Proportional to 681,398,430.94, 1,021,688,274.03 and 266,380,948.72

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Solution

The fourth proportional to 681,398,430.94, 1,021,688,274.03 and 266,380,948.72 is: 399,411,386.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,398,430.94 : 1,021,688,274.03 = 266,380,948.72 : x
  2. Step 2: Convert to fraction form
    681,398,430.94/1,021,688,274.03 = 266,380,948.72/x
  3. Step 3: Cross multiply
    681,398,430.94x = 1,021,688,274.03 × 266,380,948.72
  4. Step 4: Simplify right side
    681,398,430.94x = 272,158,291,732,210,720
  5. Step 5: Solve for x
    x = 272,158,291,732,210,720/681,398,430.94
  6. Step 6: Final answer
    x = 399,411,386.02

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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.