Home / 448,289,419.20-672,434,128.80-431,070,730.80

Finding the Fourth Proportional to 448,289,419.20, 672,434,128.80 and 431,070,730.80

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Solution

The fourth proportional to 448,289,419.20, 672,434,128.80 and 431,070,730.80 is: 646,606,096.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,289,419.20 : 672,434,128.80 = 431,070,730.80 : x
  2. Step 2: Convert to fraction form
    448,289,419.20/672,434,128.80 = 431,070,730.80/x
  3. Step 3: Cross multiply
    448,289,419.20x = 672,434,128.80 × 431,070,730.80
  4. Step 4: Simplify right side
    448,289,419.20x = 289,866,671,316,677,312
  5. Step 5: Solve for x
    x = 289,866,671,316,677,312/448,289,419.20
  6. Step 6: Final answer
    x = 646,606,096.20

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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.