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Finding the Fourth Proportional to 885,342,643.60, 1,328,013,965.40 and 873,249,408.40

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Solution

The fourth proportional to 885,342,643.60, 1,328,013,965.40 and 873,249,408.40 is: 1,309,874,112.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,342,643.60 : 1,328,013,965.40 = 873,249,408.40 : x
  2. Step 2: Convert to fraction form
    885,342,643.60/1,328,013,965.40 = 873,249,408.40/x
  3. Step 3: Cross multiply
    885,342,643.60x = 1,328,013,965.40 × 873,249,408.40
  4. Step 4: Simplify right side
    885,342,643.60x = 1,159,687,409,632,488,192
  5. Step 5: Solve for x
    x = 1,159,687,409,632,488,192/885,342,643.60
  6. Step 6: Final answer
    x = 1,309,874,112.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.