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Finding the Fourth Proportional to 608,698,865.54, 840,006,047.81 and 330,240,389.06

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Solution

The fourth proportional to 608,698,865.54, 840,006,047.81 and 330,240,389.06 is: 455,732,612.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,698,865.54 : 840,006,047.81 = 330,240,389.06 : x
  2. Step 2: Convert to fraction form
    608,698,865.54/840,006,047.81 = 330,240,389.06/x
  3. Step 3: Cross multiply
    608,698,865.54x = 840,006,047.81 × 330,240,389.06
  4. Step 4: Simplify right side
    608,698,865.54x = 277,403,924,044,452,992
  5. Step 5: Solve for x
    x = 277,403,924,044,452,992/608,698,865.54
  6. Step 6: Final answer
    x = 455,732,612.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.