Home / 280,584,931.40-420,877,397.10-127,529,923.40

Finding the Fourth Proportional to 280,584,931.40, 420,877,397.10 and 127,529,923.40

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Solution

The fourth proportional to 280,584,931.40, 420,877,397.10 and 127,529,923.40 is: 191,294,885.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,584,931.40 : 420,877,397.10 = 127,529,923.40 : x
  2. Step 2: Convert to fraction form
    280,584,931.40/420,877,397.10 = 127,529,923.40/x
  3. Step 3: Cross multiply
    280,584,931.40x = 420,877,397.10 × 127,529,923.40
  4. Step 4: Simplify right side
    280,584,931.40x = 53,674,462,212,954,384
  5. Step 5: Solve for x
    x = 53,674,462,212,954,384/280,584,931.40
  6. Step 6: Final answer
    x = 191,294,885.10

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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.