Home / 770,293,812.80-1,155,590,018.40-387,341,364.80

Finding the Fourth Proportional to 770,293,812.80, 1,155,590,018.40 and 387,341,364.80

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Solution

The fourth proportional to 770,293,812.80, 1,155,590,018.40 and 387,341,364.80 is: 581,087,122.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,293,812.80 : 1,155,590,018.40 = 387,341,364.80 : x
  2. Step 2: Convert to fraction form
    770,293,812.80/1,155,590,018.40 = 387,341,364.80/x
  3. Step 3: Cross multiply
    770,293,812.80x = 1,155,590,018.40 × 387,341,364.80
  4. Step 4: Simplify right side
    770,293,812.80x = 447,607,814,876,313,152
  5. Step 5: Solve for x
    x = 447,607,814,876,313,152/770,293,812.80
  6. Step 6: Final answer
    x = 581,087,122.13

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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.