Home / 901,369,848.80-1,243,897,694.86-499,490,310.46

Finding the Fourth Proportional to 901,369,848.80, 1,243,897,694.86 and 499,490,310.46

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Solution

The fourth proportional to 901,369,848.80, 1,243,897,694.86 and 499,490,310.46 is: 689,300,675.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    901,369,848.80 : 1,243,897,694.86 = 499,490,310.46 : x
  2. Step 2: Convert to fraction form
    901,369,848.80/1,243,897,694.86 = 499,490,310.46/x
  3. Step 3: Cross multiply
    901,369,848.80x = 1,243,897,694.86 × 499,490,310.46
  4. Step 4: Simplify right side
    901,369,848.80x = 621,314,845,786,099,712
  5. Step 5: Solve for x
    x = 621,314,845,786,099,712/901,369,848.80
  6. Step 6: Final answer
    x = 689,300,675.65

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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.