Home / 1,398,768,122.86-1,931,171,154.90-890,417,666.03

Finding the Fourth Proportional to 1,398,768,122.86, 1,931,171,154.90 and 890,417,666.03

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Solution

The fourth proportional to 1,398,768,122.86, 1,931,171,154.90 and 890,417,666.03 is: 1,229,330,926.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,768,122.86 : 1,931,171,154.90 = 890,417,666.03 : x
  2. Step 2: Convert to fraction form
    1,398,768,122.86/1,931,171,154.90 = 890,417,666.03/x
  3. Step 3: Cross multiply
    1,398,768,122.86x = 1,931,171,154.90 × 890,417,666.03
  4. Step 4: Simplify right side
    1,398,768,122.86x = 1,719,548,912,437,567,232
  5. Step 5: Solve for x
    x = 1,719,548,912,437,567,232/1,398,768,122.86
  6. Step 6: Final answer
    x = 1,229,330,926.50

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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.