Home / 642,051,403.20-963,077,104.80-478,552,190.40

Finding the Fourth Proportional to 642,051,403.20, 963,077,104.80 and 478,552,190.40

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Solution

The fourth proportional to 642,051,403.20, 963,077,104.80 and 478,552,190.40 is: 717,828,285.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,051,403.20 : 963,077,104.80 = 478,552,190.40 : x
  2. Step 2: Convert to fraction form
    642,051,403.20/963,077,104.80 = 478,552,190.40/x
  3. Step 3: Cross multiply
    642,051,403.20x = 963,077,104.80 × 478,552,190.40
  4. Step 4: Simplify right side
    642,051,403.20x = 460,882,658,026,130,304
  5. Step 5: Solve for x
    x = 460,882,658,026,130,304/642,051,403.20
  6. Step 6: Final answer
    x = 717,828,285.60

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1.5x scale

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.