Home / 1,243,019,710.40-1,864,778,397.60-369,619,390.40

Finding the Fourth Proportional to 1,243,019,710.40, 1,864,778,397.60 and 369,619,390.40

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Solution

The fourth proportional to 1,243,019,710.40, 1,864,778,397.60 and 369,619,390.40 is: 554,503,077.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243,019,710.40 : 1,864,778,397.60 = 369,619,390.40 : x
  2. Step 2: Convert to fraction form
    1,243,019,710.40/1,864,778,397.60 = 369,619,390.40/x
  3. Step 3: Cross multiply
    1,243,019,710.40x = 1,864,778,397.60 × 369,619,390.40
  4. Step 4: Simplify right side
    1,243,019,710.40x = 689,258,254,552,000,768
  5. Step 5: Solve for x
    x = 689,258,254,552,000,768/1,243,019,710.40
  6. Step 6: Final answer
    x = 554,503,077.29

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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.