Home / 421,398,280.36-630,838,047.52-254,897,903.35

Finding the Fourth Proportional to 421,398,280.36, 630,838,047.52 and 254,897,903.35

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Solution

The fourth proportional to 421,398,280.36, 630,838,047.52 and 254,897,903.35 is: 381,585,077.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,398,280.36 : 630,838,047.52 = 254,897,903.35 : x
  2. Step 2: Convert to fraction form
    421,398,280.36/630,838,047.52 = 254,897,903.35/x
  3. Step 3: Cross multiply
    421,398,280.36x = 630,838,047.52 × 254,897,903.35
  4. Step 4: Simplify right side
    421,398,280.36x = 160,799,295,663,097,504
  5. Step 5: Solve for x
    x = 160,799,295,663,097,504/421,398,280.36
  6. Step 6: Final answer
    x = 381,585,077.96

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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.