Home / 280,584,938.40-420,877,407.60-127,529,930.40

Finding the Fourth Proportional to 280,584,938.40, 420,877,407.60 and 127,529,930.40

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Solution

The fourth proportional to 280,584,938.40, 420,877,407.60 and 127,529,930.40 is: 191,294,895.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,584,938.40 : 420,877,407.60 = 127,529,930.40 : x
  2. Step 2: Convert to fraction form
    280,584,938.40/420,877,407.60 = 127,529,930.40/x
  3. Step 3: Cross multiply
    280,584,938.40x = 420,877,407.60 × 127,529,930.40
  4. Step 4: Simplify right side
    280,584,938.40x = 53,674,466,498,160,440
  5. Step 5: Solve for x
    x = 53,674,466,498,160,440/280,584,938.40
  6. Step 6: Final answer
    x = 191,294,895.60

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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.