Home / 778,494,730.68-1,074,325,574.34-421,262,509.14

Finding the Fourth Proportional to 778,494,730.68, 1,074,325,574.34 and 421,262,509.14

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Solution

The fourth proportional to 778,494,730.68, 1,074,325,574.34 and 421,262,509.14 is: 581,343,802.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,494,730.68 : 1,074,325,574.34 = 421,262,509.14 : x
  2. Step 2: Convert to fraction form
    778,494,730.68/1,074,325,574.34 = 421,262,509.14/x
  3. Step 3: Cross multiply
    778,494,730.68x = 1,074,325,574.34 × 421,262,509.14
  4. Step 4: Simplify right side
    778,494,730.68x = 452,573,087,079,739,968
  5. Step 5: Solve for x
    x = 452,573,087,079,739,968/778,494,730.68
  6. Step 6: Final answer
    x = 581,343,802.65

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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.