Home / 425,621,411.40-638,432,117.10-118,913,032.20

Finding the Fourth Proportional to 425,621,411.40, 638,432,117.10 and 118,913,032.20

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Solution

The fourth proportional to 425,621,411.40, 638,432,117.10 and 118,913,032.20 is: 178,369,548.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,621,411.40 : 638,432,117.10 = 118,913,032.20 : x
  2. Step 2: Convert to fraction form
    425,621,411.40/638,432,117.10 = 118,913,032.20/x
  3. Step 3: Cross multiply
    425,621,411.40x = 638,432,117.10 × 118,913,032.20
  4. Step 4: Simplify right side
    425,621,411.40x = 75,917,898,898,226,480
  5. Step 5: Solve for x
    x = 75,917,898,898,226,480/425,621,411.40
  6. Step 6: Final answer
    x = 178,369,548.30

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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.