Home / 398,603,547.20-597,905,320.80-365,347,150.40

Finding the Fourth Proportional to 398,603,547.20, 597,905,320.80 and 365,347,150.40

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Solution

The fourth proportional to 398,603,547.20, 597,905,320.80 and 365,347,150.40 is: 548,020,725.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,603,547.20 : 597,905,320.80 = 365,347,150.40 : x
  2. Step 2: Convert to fraction form
    398,603,547.20/597,905,320.80 = 365,347,150.40/x
  3. Step 3: Cross multiply
    398,603,547.20x = 597,905,320.80 × 365,347,150.40
  4. Step 4: Simplify right side
    398,603,547.20x = 218,443,005,163,277,824
  5. Step 5: Solve for x
    x = 218,443,005,163,277,824/398,603,547.20
  6. Step 6: Final answer
    x = 548,020,725.60

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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.