Home / 520,518,434.19-780,906,878.64-258,326,038.13

Finding the Fourth Proportional to 520,518,434.19, 780,906,878.64 and 258,326,038.13

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Solution

The fourth proportional to 520,518,434.19, 780,906,878.64 and 258,326,038.13 is: 387,553,190.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,518,434.19 : 780,906,878.64 = 258,326,038.13 : x
  2. Step 2: Convert to fraction form
    520,518,434.19/780,906,878.64 = 258,326,038.13/x
  3. Step 3: Cross multiply
    520,518,434.19x = 780,906,878.64 × 258,326,038.13
  4. Step 4: Simplify right side
    520,518,434.19x = 201,728,580,103,168,480
  5. Step 5: Solve for x
    x = 201,728,580,103,168,480/520,518,434.19
  6. Step 6: Final answer
    x = 387,553,190.92

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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.