Home / 900,334,315.72-1,242,434,670.60-498,465,974.98

Finding the Fourth Proportional to 900,334,315.72, 1,242,434,670.60 and 498,465,974.98

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Solution

The fourth proportional to 900,334,315.72, 1,242,434,670.60 and 498,465,974.98 is: 687,868,271.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,334,315.72 : 1,242,434,670.60 = 498,465,974.98 : x
  2. Step 2: Convert to fraction form
    900,334,315.72/1,242,434,670.60 = 498,465,974.98/x
  3. Step 3: Cross multiply
    900,334,315.72x = 1,242,434,670.60 × 498,465,974.98
  4. Step 4: Simplify right side
    900,334,315.72x = 619,311,409,429,584,128
  5. Step 5: Solve for x
    x = 619,311,409,429,584,128/900,334,315.72
  6. Step 6: Final answer
    x = 687,868,271.39

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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.