Home / 578,440,937.86-798,492,876.86-390,523,784.31

Finding the Fourth Proportional to 578,440,937.86, 798,492,876.86 and 390,523,784.31

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Solution

The fourth proportional to 578,440,937.86, 798,492,876.86 and 390,523,784.31 is: 539,087,812.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,440,937.86 : 798,492,876.86 = 390,523,784.31 : x
  2. Step 2: Convert to fraction form
    578,440,937.86/798,492,876.86 = 390,523,784.31/x
  3. Step 3: Cross multiply
    578,440,937.86x = 798,492,876.86 × 390,523,784.31
  4. Step 4: Simplify right side
    578,440,937.86x = 311,830,460,016,922,304
  5. Step 5: Solve for x
    x = 311,830,460,016,922,304/578,440,937.86
  6. Step 6: Final answer
    x = 539,087,812.79

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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.