Home / 398,660,355.40-597,990,533.10-291,164,931.40

Finding the Fourth Proportional to 398,660,355.40, 597,990,533.10 and 291,164,931.40

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Solution

The fourth proportional to 398,660,355.40, 597,990,533.10 and 291,164,931.40 is: 436,747,397.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,660,355.40 : 597,990,533.10 = 291,164,931.40 : x
  2. Step 2: Convert to fraction form
    398,660,355.40/597,990,533.10 = 291,164,931.40/x
  3. Step 3: Cross multiply
    398,660,355.40x = 597,990,533.10 × 291,164,931.40
  4. Step 4: Simplify right side
    398,660,355.40x = 174,113,872,547,910,912
  5. Step 5: Solve for x
    x = 174,113,872,547,910,912/398,660,355.40
  6. Step 6: Final answer
    x = 436,747,397.10

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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.