Home / 8,402,421.60-12,603,632.40-7,658,404.20

Finding the Fourth Proportional to 8,402,421.60, 12,603,632.40 and 7,658,404.20

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Solution

The fourth proportional to 8,402,421.60, 12,603,632.40 and 7,658,404.20 is: 11,487,606.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,402,421.60 : 12,603,632.40 = 7,658,404.20 : x
  2. Step 2: Convert to fraction form
    8,402,421.60/12,603,632.40 = 7,658,404.20/x
  3. Step 3: Cross multiply
    8,402,421.60x = 12,603,632.40 × 7,658,404.20
  4. Step 4: Simplify right side
    8,402,421.60x = 96,523,711,307,416.08
  5. Step 5: Solve for x
    x = 96,523,711,307,416.08/8,402,421.60
  6. Step 6: Final answer
    x = 11,487,606.30

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Similar ratio
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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.