Home / 448,103,416.40-672,155,124.60-420,893,637.20

Finding the Fourth Proportional to 448,103,416.40, 672,155,124.60 and 420,893,637.20

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Solution

The fourth proportional to 448,103,416.40, 672,155,124.60 and 420,893,637.20 is: 631,340,455.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,103,416.40 : 672,155,124.60 = 420,893,637.20 : x
  2. Step 2: Convert to fraction form
    448,103,416.40/672,155,124.60 = 420,893,637.20/x
  3. Step 3: Cross multiply
    448,103,416.40x = 672,155,124.60 × 420,893,637.20
  4. Step 4: Simplify right side
    448,103,416.40x = 282,905,815,155,513,184
  5. Step 5: Solve for x
    x = 282,905,815,155,513,184/448,103,416.40
  6. Step 6: Final answer
    x = 631,340,455.80

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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.