Home / 280,585,009.40-420,877,514.10-127,530,001.40

Finding the Fourth Proportional to 280,585,009.40, 420,877,514.10 and 127,530,001.40

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Solution

The fourth proportional to 280,585,009.40, 420,877,514.10 and 127,530,001.40 is: 191,295,002.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,585,009.40 : 420,877,514.10 = 127,530,001.40 : x
  2. Step 2: Convert to fraction form
    280,585,009.40/420,877,514.10 = 127,530,001.40/x
  3. Step 3: Cross multiply
    280,585,009.40x = 420,877,514.10 × 127,530,001.40
  4. Step 4: Simplify right side
    280,585,009.40x = 53,674,509,962,401,528
  5. Step 5: Solve for x
    x = 53,674,509,962,401,528/280,585,009.40
  6. Step 6: Final answer
    x = 191,295,002.10

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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.