Home / 1,398,768,125.86-1,931,171,159.04-890,417,669.03

Finding the Fourth Proportional to 1,398,768,125.86, 1,931,171,159.04 and 890,417,669.03

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Solution

The fourth proportional to 1,398,768,125.86, 1,931,171,159.04 and 890,417,669.03 is: 1,229,330,930.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,768,125.86 : 1,931,171,159.04 = 890,417,669.03 : x
  2. Step 2: Convert to fraction form
    1,398,768,125.86/1,931,171,159.04 = 890,417,669.03/x
  3. Step 3: Cross multiply
    1,398,768,125.86x = 1,931,171,159.04 × 890,417,669.03
  4. Step 4: Simplify right side
    1,398,768,125.86x = 1,719,548,921,930,360,064
  5. Step 5: Solve for x
    x = 1,719,548,921,930,360,064/1,398,768,125.86
  6. Step 6: Final answer
    x = 1,229,330,930.65

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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.