Home / 1,209,750,654.74-1,669,391,136.72-666,574,741.94

Finding the Fourth Proportional to 1,209,750,654.74, 1,669,391,136.72 and 666,574,741.94

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Solution

The fourth proportional to 1,209,750,654.74, 1,669,391,136.72 and 666,574,741.94 is: 919,837,457.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,750,654.74 : 1,669,391,136.72 = 666,574,741.94 : x
  2. Step 2: Convert to fraction form
    1,209,750,654.74/1,669,391,136.72 = 666,574,741.94/x
  3. Step 3: Cross multiply
    1,209,750,654.74x = 1,669,391,136.72 × 666,574,741.94
  4. Step 4: Simplify right side
    1,209,750,654.74x = 1,112,773,966,147,710,208
  5. Step 5: Solve for x
    x = 1,112,773,966,147,710,208/1,209,750,654.74
  6. Step 6: Final answer
    x = 919,837,457.24

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Double scale
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1.5x scale

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.