Home / 920,404,108.76-1,270,161,549-518,522,679.32

Finding the Fourth Proportional to 920,404,108.76, 1,270,161,549 and 518,522,679.32

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Solution

The fourth proportional to 920,404,108.76, 1,270,161,549 and 518,522,679.32 is: 715,563,482.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,404,108.76 : 1,270,161,549 = 518,522,679.32 : x
  2. Step 2: Convert to fraction form
    920,404,108.76/1,270,161,549 = 518,522,679.32/x
  3. Step 3: Cross multiply
    920,404,108.76x = 1,270,161,549 × 518,522,679.32
  4. Step 4: Simplify right side
    920,404,108.76x = 658,607,569,556,721,408
  5. Step 5: Solve for x
    x = 658,607,569,556,721,408/920,404,108.76
  6. Step 6: Final answer
    x = 715,563,482.70

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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.