Home / 909,169,319.36-1,363,802,661.66-287,337,247.40

Finding the Fourth Proportional to 909,169,319.36, 1,363,802,661.66 and 287,337,247.40

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Solution

The fourth proportional to 909,169,319.36, 1,363,802,661.66 and 287,337,247.40 is: 431,021,256.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,169,319.36 : 1,363,802,661.66 = 287,337,247.40 : x
  2. Step 2: Convert to fraction form
    909,169,319.36/1,363,802,661.66 = 287,337,247.40/x
  3. Step 3: Cross multiply
    909,169,319.36x = 1,363,802,661.66 × 287,337,247.40
  4. Step 4: Simplify right side
    909,169,319.36x = 391,871,302,798,177,920
  5. Step 5: Solve for x
    x = 391,871,302,798,177,920/909,169,319.36
  6. Step 6: Final answer
    x = 431,021,256.94

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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.