Home / 431,326,095.60-646,989,143.40-258,714,058.80

Finding the Fourth Proportional to 431,326,095.60, 646,989,143.40 and 258,714,058.80

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Solution

The fourth proportional to 431,326,095.60, 646,989,143.40 and 258,714,058.80 is: 388,071,088.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,326,095.60 : 646,989,143.40 = 258,714,058.80 : x
  2. Step 2: Convert to fraction form
    431,326,095.60/646,989,143.40 = 258,714,058.80/x
  3. Step 3: Cross multiply
    431,326,095.60x = 646,989,143.40 × 258,714,058.80
  4. Step 4: Simplify right side
    431,326,095.60x = 167,385,187,288,549,248
  5. Step 5: Solve for x
    x = 167,385,187,288,549,248/431,326,095.60
  6. Step 6: Final answer
    x = 388,071,088.20

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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.