Home / 678,742,881.15-1,018,114,321.73-269,799,031.65

Finding the Fourth Proportional to 678,742,881.15, 1,018,114,321.73 and 269,799,031.65

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Solution

The fourth proportional to 678,742,881.15, 1,018,114,321.73 and 269,799,031.65 is: 404,698,547.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,742,881.15 : 1,018,114,321.73 = 269,799,031.65 : x
  2. Step 2: Convert to fraction form
    678,742,881.15/1,018,114,321.73 = 269,799,031.65/x
  3. Step 3: Cross multiply
    678,742,881.15x = 1,018,114,321.73 × 269,799,031.65
  4. Step 4: Simplify right side
    678,742,881.15x = 274,686,258,111,750,528
  5. Step 5: Solve for x
    x = 274,686,258,111,750,528/678,742,881.15
  6. Step 6: Final answer
    x = 404,698,547.48

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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.