Home / 1,272,298,809.60-1,910,239,804.80-788,569,401.60

Finding the Fourth Proportional to 1,272,298,809.60, 1,910,239,804.80 and 788,569,401.60

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Solution

The fourth proportional to 1,272,298,809.60, 1,910,239,804.80 and 788,569,401.60 is: 1,183,964,528.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,298,809.60 : 1,910,239,804.80 = 788,569,401.60 : x
  2. Step 2: Convert to fraction form
    1,272,298,809.60/1,910,239,804.80 = 788,569,401.60/x
  3. Step 3: Cross multiply
    1,272,298,809.60x = 1,910,239,804.80 × 788,569,401.60
  4. Step 4: Simplify right side
    1,272,298,809.60x = 1,506,356,659,783,636,736
  5. Step 5: Solve for x
    x = 1,506,356,659,783,636,736/1,272,298,809.60
  6. Step 6: Final answer
    x = 1,183,964,528.16

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Double scale
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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.