Home / 495,017,020.80-742,035,643.20-218,818,166.40

Finding the Fourth Proportional to 495,017,020.80, 742,035,643.20 and 218,818,166.40

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Solution

The fourth proportional to 495,017,020.80, 742,035,643.20 and 218,818,166.40 is: 328,010,698.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,017,020.80 : 742,035,643.20 = 218,818,166.40 : x
  2. Step 2: Convert to fraction form
    495,017,020.80/742,035,643.20 = 218,818,166.40/x
  3. Step 3: Cross multiply
    495,017,020.80x = 742,035,643.20 × 218,818,166.40
  4. Step 4: Simplify right side
    495,017,020.80x = 162,370,878,848,468,640
  5. Step 5: Solve for x
    x = 162,370,878,848,468,640/495,017,020.80
  6. Step 6: Final answer
    x = 328,010,698.67

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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.