Home / 30,209,085.60-45,313,628.40-8,644,390.80

Finding the Fourth Proportional to 30,209,085.60, 45,313,628.40 and 8,644,390.80

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Solution

The fourth proportional to 30,209,085.60, 45,313,628.40 and 8,644,390.80 is: 12,966,586.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,209,085.60 : 45,313,628.40 = 8,644,390.80 : x
  2. Step 2: Convert to fraction form
    30,209,085.60/45,313,628.40 = 8,644,390.80/x
  3. Step 3: Cross multiply
    30,209,085.60x = 45,313,628.40 × 8,644,390.80
  4. Step 4: Simplify right side
    30,209,085.60x = 391,708,712,455,578.75
  5. Step 5: Solve for x
    x = 391,708,712,455,578.75/30,209,085.60
  6. Step 6: Final answer
    x = 12,966,586.20

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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.