Home / 495,291,390.40-742,937,085.60-280,300,542.40

Finding the Fourth Proportional to 495,291,390.40, 742,937,085.60 and 280,300,542.40

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Solution

The fourth proportional to 495,291,390.40, 742,937,085.60 and 280,300,542.40 is: 420,450,813.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,291,390.40 : 742,937,085.60 = 280,300,542.40 : x
  2. Step 2: Convert to fraction form
    495,291,390.40/742,937,085.60 = 280,300,542.40/x
  3. Step 3: Cross multiply
    495,291,390.40x = 742,937,085.60 × 280,300,542.40
  4. Step 4: Simplify right side
    495,291,390.40x = 208,245,668,062,755,232
  5. Step 5: Solve for x
    x = 208,245,668,062,755,232/495,291,390.40
  6. Step 6: Final answer
    x = 420,450,813.60

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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.